GB524672A - Improvements in or relating to the control of television receivers - Google Patents

Improvements in or relating to the control of television receivers

Info

Publication number
GB524672A
GB524672A GB4014/39A GB401439A GB524672A GB 524672 A GB524672 A GB 524672A GB 4014/39 A GB4014/39 A GB 4014/39A GB 401439 A GB401439 A GB 401439A GB 524672 A GB524672 A GB 524672A
Authority
GB
United Kingdom
Prior art keywords
valve
control
cell
television receivers
relating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB4014/39A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kolster Brandes Ltd
Original Assignee
Kolster Brandes Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kolster Brandes Ltd filed Critical Kolster Brandes Ltd
Publication of GB524672A publication Critical patent/GB524672A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J21/00—Vacuum tubes
    • H01J21/02—Tubes with a single discharge path
    • H01J21/18—Tubes with a single discharge path having magnetic control means; having both magnetic and electrostatic control means
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/57—Control of contrast or brightness
    • H04N5/58—Control of contrast or brightness in dependence upon ambient light

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Receiver Circuits (AREA)
  • Closed-Circuit Television Systems (AREA)

Abstract

524,672. Television receivers; valve amplifying circuits: KOLSTER-BRANDES, Ltd., and SMYTH, C. N. Feb. 7, 1939, No. 4014. [Classes 40 (iii) and 40 (v)] The brightness or contrast of a television receiver is automatically controlled by a lightsensitive cell responsive to the general illumination of the room. The cell may control the gain of a vision amplifier or of a high or intermediate frequency amplifier in the vision channel. As shown, the cell P controls the grid potential of valve V2 which in turn controls the screen potential of the amplifying valve VI.
GB4014/39A 1939-02-07 1939-02-07 Improvements in or relating to the control of television receivers Expired GB524672A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB260215X 1939-02-07

Publications (1)

Publication Number Publication Date
GB524672A true GB524672A (en) 1940-08-12

Family

ID=10237115

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4014/39A Expired GB524672A (en) 1939-02-07 1939-02-07 Improvements in or relating to the control of television receivers

Country Status (4)

Country Link
BE (1) BE476128A (en)
CH (1) CH260215A (en)
FR (1) FR862784A (en)
GB (1) GB524672A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2600397A (en) * 1939-11-08 1952-06-17 Fischer Ernst Friedrich Automatic regulation of light falling on deformable cathode-ray tube screen
US2635141A (en) * 1949-11-30 1953-04-14 Rca Corp Color television receiver registration system
US8032084B2 (en) 2001-07-18 2011-10-04 Data Transfer & Communications Limited Data security device

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1000438B (en) * 1955-05-12 1957-01-10 Siemens Ag Circuit for generating a control voltage for television receivers depending on the room lighting conditions
DE1014159B (en) * 1956-04-25 1957-08-22 Telefunken Gmbh Circuit arrangement for contrast control in television receivers
DE1027236B (en) * 1957-03-14 1958-04-03 Metz Transformatoren & App Light-controlled remote control device for a television set
DE1177675B (en) * 1958-01-25 1964-09-10 Saba Gmbh Arrangement for the automatic, room light-dependent regulation of the contrast and the image brightness of television receivers
NL278224A (en) * 1961-05-10

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2600397A (en) * 1939-11-08 1952-06-17 Fischer Ernst Friedrich Automatic regulation of light falling on deformable cathode-ray tube screen
US2635141A (en) * 1949-11-30 1953-04-14 Rca Corp Color television receiver registration system
US8032084B2 (en) 2001-07-18 2011-10-04 Data Transfer & Communications Limited Data security device

Also Published As

Publication number Publication date
CH260215A (en) 1949-02-28
BE476128A (en)
FR862784A (en) 1941-03-14

Similar Documents

Publication Publication Date Title
GB777805A (en) Improvements in or relating to television receivers
GB515362A (en) Improvements in or relating to the transmission of electrical signals having a direct current component
GB524672A (en) Improvements in or relating to the control of television receivers
GB538947A (en) Improvements in television signal-translating systems
GB534457A (en) Improvements in and relating to detector coupling circuits
GB494502A (en) Improvements in or relating to television receivers
GB459853A (en) Improvements in and relating to television and like systems
GB535413A (en) Television video-frequency signal-translating system
GB544403A (en) Improvements in wide band thermionic amplifiers
GB919034A (en) Improvements in and relating to television receiving apparatus
GB529319A (en) Television automatic amplification control system
GB456208A (en) Improvements in or relating to circuits associated with the deflecting systems in cathode ray tubes, preferably for television purposes
GB525629A (en) Improvements in or relating to television systems
GB684190A (en) Improvements in signal clipping circuits, particularly for use in television receivers
GB475189A (en) Improvements in or relating to television systems
GB465141A (en) Television receiving circuit
GB856016A (en) Improvements in or relating to television receivers
GB515426A (en) Improvements in or relating to television receivers
GB502686A (en) Improvements in or relating to amplifying circuits including electron multipliers
GB484202A (en) Improvements in or relating to television systems
GB649738A (en) Improvements in or relating to cathode ray tube circuits for television receivers
GB491502A (en) Improvements in or relating to television systems
GB734438A (en) Improvements in or relating to automatic gain control in television receivers
GB462416A (en) Improvements in television
GB715216A (en) Improvements in or relating to television broadcast receivers